Alessandro Bonazzi
e075990ed3
Files correlati : Commento : Aggiunto il preprocessore c++ mcpp per sostituire il compilatore nella compilazione delle maschere.
41 lines
794 B
C
41 lines
794 B
C
/* n_11.c: Operator "defined" in #if or #elif directive. */
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#include "defs.h"
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#define MACRO_abc abc
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#define MACRO_0 0
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#define ZERO_TOKEN
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main( void)
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{
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int abc = 1, a = 0;
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fputs( "started\n", stderr);
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/* 11.1: */
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#if defined a
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assert( a);
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#else
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assert( MACRO_abc);
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#endif
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#if defined (MACRO_abc)
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assert( MACRO_abc);
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#else
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assert( a);
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#endif
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/* 11.2: "defined" is an unary operator whose result is 1 or 0. */
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#if defined MACRO_0 * 3 != 3
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fputs( "Bad handling of defined operator.\n", stderr);
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exit( 1);
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#endif
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#if (!defined ZERO_TOKEN != 0) || (-defined ZERO_TOKEN != -1)
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fputs( "Bad grouping of defined, -, ! in #if expression.\n", stderr);
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exit( 1);
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#endif
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fputs( "success\n", stderr);
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return 0;
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}
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